A kind of uv white primer for electrostatic spraying and preparation method thereof

An electrostatic spraying, white technology, used in primers, coatings, polyester coatings, etc., can solve the problems of heavy surface grinding work, affecting the appearance quality of the paint film, waste, etc., to achieve excellent anti-sag performance, improve The effect of anti-sag properties

Active Publication Date: 2022-03-15
SHANGHAI CHANGRUNFA PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the method of vacuum spraying is easy to cause the problems of low paint rate and uneven coating, and often requires multiple sprays, which has low efficiency, serious waste, and a large workload for polishing the surface of the workpiece. Therefore, electrostatic spraying is often used. To overcome the above problems, but the current UV electrostatic spraying primers are mostly transparent primers. After adding pigments, their overall viscosity is high, resulting in poor anti-sag performance during application, which in turn affects the overall appearance quality of the paint film. Therefore , it is necessary to propose a new scheme to solve the above problems

Method used

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  • A kind of uv white primer for electrostatic spraying and preparation method thereof
  • A kind of uv white primer for electrostatic spraying and preparation method thereof
  • A kind of uv white primer for electrostatic spraying and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Embodiment 1: A UV white primer for electrostatic spraying, each component and its corresponding parts by weight are shown in Table 1, and are prepared through the following steps:

[0050] Step 1, take a clean vat, mix and stir the bisphenol A type epoxy acrylic resin, thermoplastic acrylic resin, polyester acrylic resin and tripropylene glycol diacrylate of the corresponding parts by weight in sequence, Disperse at 700r / min for 12.5 minutes;

[0051] Step 2, then add 2-hydroxyl-2-methyl-1-phenylacetone and toluene in corresponding parts by weight, and disperse for 20 minutes at a speed of 1200r / min of the disperser;

[0052] Step 3, then input titanium dioxide, talcum powder, CMCAB cellulose ester dispersion and cellulose acetate butyrate in corresponding parts by weight, and disperse for 25 minutes at a disperser speed of 1350r / min;

[0053] Step 4: Finally, add the mixing aid in corresponding parts by weight, and disperse for 15 minutes at the speed of the disperse...

Embodiment 2

[0055] Embodiment 2: a kind of UV white primer for electrostatic spraying, the difference with embodiment 1 is, mainly comprises the following steps:

[0056] Step 1, take a clean vat, mix and stir the bisphenol A type epoxy acrylic resin, thermoplastic acrylic resin, polyester acrylic resin and tripropylene glycol diacrylate of the corresponding parts by weight in sequence, Disperse at 600r / min for 15 minutes;

[0057] Step 2, then add 2-hydroxyl-2-methyl-1-phenylacetone and toluene in corresponding parts by weight, and disperse for 25 minutes at a disperser speed of 1100r / min;

[0058] Step 3, then input titanium dioxide, talcum powder, CMCAB cellulose ester dispersion and cellulose acetate butyrate in corresponding parts by weight, and disperse for 20 minutes at a disperser speed of 1500r / min;

[0059] Step 4: Finally, add the mixing auxiliary agent in corresponding parts by weight, and disperse for 10 minutes at the rotational speed of the disperser at 1000r / min, and then...

Embodiment 3

[0060] Embodiment 3: a kind of UV white primer for electrostatic spraying, the difference with embodiment 1 is, mainly comprises the following steps:

[0061] Step 1, take a clean vat, mix and stir the bisphenol A type epoxy acrylic resin, thermoplastic acrylic resin, polyester acrylic resin and tripropylene glycol diacrylate of the corresponding parts by weight in sequence, Disperse at 800r / min for 10 minutes;

[0062] Step 2, then add 2-hydroxyl-2-methyl-1-phenylacetone and toluene in corresponding parts by weight, and disperse for 15 minutes at a disperser speed of 1300r / min;

[0063] Step 3, then input titanium dioxide, talcum powder, CMCAB cellulose ester dispersion and cellulose acetate butyrate in corresponding parts by weight, and disperse for 30 minutes at a disperser speed of 1200r / min;

[0064] Step 4, finally add the mixing aid in corresponding parts by weight, and disperse for 20 minutes at the speed of the disperser at 800r / min to obtain a UV white primer for el...

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Abstract

The invention discloses a UV white primer for electrostatic spraying and a preparation method thereof, relates to the technical field of UV coatings, and solves the problems caused by the poor anti-sagging performance of the UV primer for electrostatic spraying in the application process The problem of poor overall appearance quality of the film. A UV white primer for electrostatic spraying, which comprises the following components in parts by weight: 20-40 parts of bisphenol A type epoxy acrylic resin; 5-10 parts of thermoplastic acrylic resin; 5 parts of polyester acrylic resin ‑10 parts; 10‑25 parts of reactive diluent; 8‑15 parts of white pigment; 15‑25 parts of filler; 1‑3 parts of photoinitiator; 3‑8 parts of organic solvent; 0.1‑1 part of mixing aid; CMCAB fiber 4-8 parts of vegan ester dispersion; 2-3 parts of cellulose acetate butyrate; and the content of butyryl in the cellulose acetate butyrate is 35%-55%. The UV white primer used for electrostatic spraying in the present invention has good anti-sag property when spraying, and can form a good and stable paint film.

Description

technical field [0001] The invention relates to the technical field of UV coatings, in particular to a UV white primer for electrostatic spraying and a preparation method thereof. Background technique [0002] Electrostatic spraying is to make the atomized paint particles negatively charged in the DC high-voltage electric field, and then under the action of the electrostatic field, they fly to the surface to be sprayed with positive charges in a directional manner, depositing a layer of uniform and firm coating film. method. [0003] A UV vacuum spraying oil-sealing primer and a preparation method thereof are disclosed in the Chinese invention patent application document whose publication number is CN109181505A, and the UV vacuum spraying oil-sealing primer includes self-initiating polyester acrylate 30 in parts by weight. ~50 parts, 3~10 parts of polyurethane acrylic resin, 2~10 parts of MMA copolymer, 1~30 parts of reactive diluent, 3~8 parts of photoinitiator, 0~10 parts...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/10C09D133/04C09D167/06C09D7/65C09D5/00
CPCC09D163/10C09D7/65C09D5/002C08L2205/02C08L2205/035C08L33/04C08L67/06C08L1/14C08L1/32C08L1/284C08L75/02
Inventor 梁文文
Owner SHANGHAI CHANGRUNFA PAINT
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